[AT] More Magneto Woes

[charliehill]

Hi Ben,  this is a long shot but it worked for me once on a Fairbanks Morse 
mag.  It wouldn't hit a lick.  I got to poking around in it and found that 
the wire that goes to the kill lug on the side of the mag was chaffed and 
was continuously going to ground on the case.  There was nothing wrong with 
the mag.  Just a bad wire.

I don't even know if you IH mag has a ground lug.  That's not the point. 
The point is to look for little things, loose wires, chaffed wires, loose 
connections, corrosion (sometimes corrosion on aluminum is a nearly clear 
white substance that you'll never see.  It looks like the aluminum).  You 
can check the condenser easy enough by charging it up with a battery, 
discharging it and doing it again a few times.

Some of the others can probably give you better and more specific info.  I'm 
just telling you where I'd start looking if it were mine.

Good luck

Charlie
----- Original Message ----- 
From: "Ben Wagner" <ben at olde-books.com>
To: <at at lists.antique-tractor.com>; "'Farmall/IHC mailing list'" 
<farmall at lists.antique-tractor.com>
Sent: Wednesday, January 20, 2010 6:01 PM
Subject: [AT] More Magneto Woes


> Hello,
>
>
>
> I replaced the coil and coil cover on the IH H4 Magneto on my Farmall 
> Super
> A.  I finally got it together, and tested it.  I hooked a spark plug up,
> with the tip of the plug next to my vise, and spun the mag.  I got a 
> decent
> blue spark, so I know the rascal worked then.
>
>
>
> I was about to reinstall the mag, and I decided to test it once more.  I
> have not seen a blue spark, and I am repeating the same procedure that I 
> did
> before.  I wondered if the spark plug was bad, so I pulled another plug 
> and
> tried it.  No spark, no nothing.
>
>
>
> Is the condenser bad?  I did not replace it; maybe I should have done that
> as it is.  I sure hope I did not destroy my new coil!
>
>
>
> Thanks,
>
> Ben Wagner
>
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